#NEXUS [!This data set was downloaded from TreeBASE, a relational database of phylogenetic knowledge. TreeBASE has been supported by the NSF, Harvard University, Yale University, SDSC and UC Davis. Please do not remove this acknowledgment from the Nexus file. Generated on September 19, 2025; 3:47 GMT TreeBASE (cc) 1994-2008 Study reference: Mchugh D. 1997. Molecular evidence that echiurans and pogonophorans are derived annelids. Proceedings of the National Academy of Sciences of the United States of America, 94: 8006-8009. TreeBASE Study URI: http://purl.org/phylo/treebase/phylows/study/TB2:S352] BEGIN TAXA; TITLE TaxonLabelSet9786; DIMENSIONS NTAX=20; TAXLABELS Alvinoconcha_hessleri Apis_mellifera Artemia Axiothella_rubrocincta Bombyx_mori Cerebratulus Harmothoe_imbricata Lamellibrachia Listriolobus_pelodes Lumbricus_terrestris Mytilus Nereis_virens Onchocerca_volvulus Pheretima Placobdella_parasitica Rhynchosciara_americana Ridgeia_piscesae Sternaspis_scutata Urechis_caupo Xenopus_laevis ; END; BEGIN CHARACTERS; [! TreeBASE Matrix URI: http://purl.org/phylo/treebase/phylows/matrix/TB2:M1875] TITLE ; LINK TAXA = TaxonLabelSet9786; DIMENSIONS NCHAR=345; FORMAT DATATYPE=DNA SYMBOLS= "A C G T" MISSING=. GAP= -; MATRIX [ 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360] [ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .] Alvinoconcha_hessleri AAGAACATCTCTGTCAAGGATATTCGCCGTGGCAACGTGGCTGGTGACACGAAGAACGACCCCCCCAAGGAATGCAAGAGCTTCTATGCCCAGGTCATCATCCTCAACCACCCTGGTGAGATCAAGGCTGGCTATGCACCAGTGTTGGATTGCCACACCGCTCACATCGCCTGCAAGTTTTCTGAGCTGAAAGAGAAGTGTGACAGGCGTTCTGGCAAGAAGCTGGAAGACAACCCCAAATCTGTGAAGACCGGTGATGCTGCCATGGTGGACCTGGTCCCCAGCAAGCCAATGTGCGTAGAGGCCTTCTCAGAGTACCCACCTCTGGGTCGGTTTGCTGTCCGC Apis_mellifera AAGAACATTTCTGTGAAAGAGTTGAGGCGTGGTTACGTGGCGGGAGATTCGAAAAATCAACCGCCACGGGGGGCAGCCGATTTCACAGCGCAGGTGATCGTCCTCAATCATCCTGGGCAGATAAGCAACGGTTATACACCGGTGCTCGATTGTCACACCGCTCATATCGCTTGCAAATTTGCGGAGATCAAGGAGAAATGCGACCGCCGTACCGGCAAGACCACCGAGGAGAATCCGAAGAGCATCAAGAGCGGAGACGCCGCGATCGTGATGTTGCAACCTACTAAGCCGATGTGCGTCGAAGCTTTCCAGGAATTCCCTCCGCTTGGTCGCTTCGCGGTTCGC Artemia AAAAACGTTTCAGTCAAAGAACTTCGTCGTGGCTACGTCGCCTCAGATTCAAAGAACAATCCAGCCAGAGGCTCTCAAGATTTCTTTGCTCAGGTTATTGTCTTGAACCACCCTGGTCAGATCTCAAACGGTTACACTCCTGTCTTGGACTGCCACACAGCTCACATTGCTTGCAAGTTTGCTGAGATTAAAGAGAAGTGTGACAGACGTACTGGCAAAACAACTGAAGCTGAGCCAAAATTTATCAAGTCAGGTGATGCGGCCATGATCACTTTGGTACCTTCCAAGCCGTTGTGTGTTGAAGCCTTTTCCGACTTCCCACCTCTTGGTCGATTTGCTGTCCGT Axiothella_rubrocincta AAGAACGTGTCCATCAAGGATATCCGTCGTGGCAACGTCTGCGGAGACTCCAAGAATGATCCGCCCTCTGCAAGCTCGGAATTCAATGCCCAGGTGATCATCCTGAACCACCCTGGTGAAATCCATGCTGGATACTCTCCAGTCGTAGACTGCCACACTGCCCACGTTGCCTGCAAATTCAGTGAGCTAAAGGAGAAAATAGACCGTCGTAGTGGCAAGAAGCTAGAAGACAACCCGAAAATGGTAAAATCTGGAGATGCCTGCATCGCGGTTTTGGTGCCCAGCAAGCCCATGTGTGTCGAGGCTTTCTCAAACTACCCTCCCCTGGGACGTTTTGCCGTGCGC Bombyx_mori AAGAACGTGTCCGTCAAGGAATTGCGTCGTGGTTATGTTGCTGGTGACTCCAAAAACAACCCACCTAAGGGTGCTGCAGATTTTACAGCTCAAGTCATTGTGCTTAACCATCCTGGTCAAATCTCAAACGGTTACACACCAGTCTTGGATTGCCACACTGCCCACATTGCCTGCAAATTTGCAGAAATCAAAGAAAAAGTTGACCGTCGTACTGGTAAATCTACTGAAGTCAACCCAAAATCCATCAAGTCTGGAGATGCAGCCATTGTCAACTTGGTACCTTCCAAGCCTCTATGTGTAGAGTCCTTCCAGGAATTCCCACCCCTCGGTCGTTTTGCTGTCCGT Cerebratulus AAGAACGTTTCTGTAAAGGAGATCAAGCGAGGGATGGTCGCTGGTGACAACAAGAACGATCCTCCAAAAGGTTGCGAAAACTTCACAGCACAGGTTATTATTCTCAATCATCCCGGAGAGGTCCACGCTGGTTATTCGCCGGTACTCGATTGCCACACTGCTCACATTGCGTGTAAATTCCTCGAATTCAAGGAAAAGATCGACAGGAGGAGTGGCAAGAAGCTAGAGGATAACCCCAAGATGGTCAAGTCGGGAGATGCCGCTATTGCCGTGCTCCAGCCGAGCAAGCCTATGGTAGTCGAATCGTTCGTCGACTATCCTCCGCTAGGAAGGTTTGCTGTGCGC Harmothoe_imbricata AAGTCTGTGTCAGTCAAGGACATACGACGTGGAAACGTCGCCGGTGACAGCAAGAACGACCCTCCCAAGGAGGCTAAGGAGTTCAACGCTCAGGTCGTCATCCTGAACCACCCTGGCCAGATCAACGCCGGGTACGCACCTGTGGTCGATTGCCACACTGCCCACATTGCCTGCAAGTTC.CCGAGCTGATCGAGAAGATCGATCGTCGTTCCGGCAAGAAGCTCGAGGACAACCCCAACCACGTCAAGTCTGGTGACGCC.CCATGGTCAAGATGGTGCCCCAGAAGCCCATGTGCGTGGAGGCCTTCTCCGACTACCAGCCCCTCGGACGTTTCGCCGTCCGT Lamellibrachia AAGAATGTGTCTGTCAAGGACATCCGTCGTGGTTTCGTGTGCGGTGACTCAAAGAACGATCCTCCCCTGGAGACTGACGAGTTCCTTGCTCAGGTGATCATCCTGAACCACCCCGGAACGATCCAGGCTGGATACGCCCCCGTGCTCGACTGCCACACAGCCCACATTGCGTGCAAGTTCAAGGAGCTGAAGGAGAAGATTGATCGTCGTAGCGGCAAAGTGCTTGAGGCCACCCCCCAGAGCGTGAAGTCTGGTGATGCTGCCATGGTCGAGATGATACCCCAGAAGGCCATGTGCGTTGAGAAGTTCTCCGAGTATGCCCCACTTGGTCGCTTTGCCGTCCGT Listriolobus_pelodes AA.AACGTCTCCGTCAAAGAAATCCGAA.AGGATATGTGGCCGGCGACTCCAA.AATGATGCCCCCAAGGTCTGCGACAGCTTCAAGGCCCAGGTTATCATTCTGAACCACCCTGGCACCATCAGTGCTGGCTATGCCCCAGTGTTGGATTGTCATACCGCTCACATCGCCTGCAAGTTCGGGGAAATTCTGGCCAA.ATGGACCGTCGTTCCGGCAAGACCCTTGAA.A.AACCCCAAGGATCT.GAATCTGGTGATGCCAGTATGGTGAACATGGTGCCCCA.AAACCCATGTGTGTGGA.CCTTTCTCTGATTACGCACCTCTCGGACGCTTTGCTGTGCGT Lumbricus_terrestris AAGAACGTGT{CG}GGTGAAGAACATCCGTCGTGGTAACGTTGCTGGCGACTCCAAGAATGATCCTCCAAAGGAGACTGAAGAATTCAAAGCACAGGTTATCATTCTGAACCATCCAGGACAGATCAACGCTGGTTATGCGCCAGTTGTTGACTGCCACACCTCGCACATCGCCTGCAAATTCCGAGAGCTGCTGGAGAAGATCGACGGTGGTAGCGGAAAGAAGCTGGAAGACAACCCTGCCAACGTCAAGTCCGGAGACGCCGCCATCGTCGAGATGGTTCCCCAGAAGCCAATGTGCGTCGAGGCTTTCTCCGACTACGCCCCGCTGGGAAGATTCGCCGTGCGT Mytilus AAGAACGTCTCCGTCAAGGAAATTCGTAGAGGAATGGTCTGTGGTGACAGCAAAAATGACCCACCCAAAGGAGCCAAAAGCTTTATTGCACAGGTCATCATCTTGAACCACCCTGGAGAAATTAAGAATGGATATGCGCCAGTCTTGGATTGTCATACAGCTCATATTGCCTGTAAATTTGTTGAAATCAAAGAAAAGATTGACAGAAGAAGTGGTAAGAAACTTGAAGAATTCCCAAAATTCATCAAATCTGGGGATGCTGGTATTGTGGACATGACACCATCAAAGCCTATGTGTGTTGAATCCTTCCAAACATACGCCCCATTAGGACGTTTTGCTGTAAGA Nereis_virens AAGAACATCTCTGTCAAGGACATCCGTCGTGGAAACGTTGCGTCCGACAGCAAGAATGACCCCGCCAAGGAGACTGAAGACTTCAAGGCTCAGGTCATCATCCTGAACCACCCCGGAGAGATCCGTGCTGGCTACGCCCCTGTGGTTGATTGCCACACAGCTCACATTGCTTGCAAGTTCGCTGACCTGAAGGAAAAGATTGATCGTCGTTCCGGTAAGAAGCTGGAAGACAACCCCGAGAAGGTCAAGTCTGGAGATGCCGCCATTGTGCGCATGGTTCCACAGAAACCCATGTGTGTCGAGG{CG}.TTTTCAGACTACGCTCCCCTCGGACGTTTTG{CG}CGTTCCG Onchocerca_volvulus AAAAATATCTCTATTAAGGACATCCGACGTGGATCGGTAGCATCTGATTCTAAAAATGATCCGGCTAAAGAAACCAAAATGTTCACTGCCCAGGTCATTATTATGAATCATCCGGGCCAAATTTCTGCTGGATACACTCCTGTGCTTGATTGTCATACCGCTCACATTGCTTGCAAATTTGCGGAACTCAAAGAAAAAGTTGATCGAAGATCTGGTAAAAAAGTGGAGGACAATCCAAAGTCACTAAAGTCTGGTGATGCCGGTATTATCGATCTGATACCAACTAAACCACTATGTGTCGAAACTTTCACTGAGTATCCACCATTGGGACGATTTGCTGTGCGT Pheretima AAGAACGTGTCGGTGAAGGACATCCGCCGTGGTAATGTTGCCGGAGACTCGAAGAATGATCCTCCTAAGGAGACTGAGGAATTCAAGGCACAGGTTATCATTCTGAACCATCCAGGACAGATCAATGCTGGTTATGCCCCAGTCGTTGACTGCCACACCTCGCACATTGCCTGCAAATTCCGCGAGCTGCTGGAGAAGATCGACCGTCGTAGCGGAAAGAAGCTGGAAGACAATCCTGCCAACGTCAAGTCCGGAGATGCCGCCATCGTCGAGATGGTTCCTCAGAAGCCGATGTGCGTCGAGGCGTTCTCCGACTACGCGCCGCTGGGAAGATTTGCCGTGCGC Placobdella_parasitica AAAAATGTGTCTGTTAAAGATATTAGGCGTGGGAATGTTGCCGGTGATTCCAAAAATGATCCACCAAAAGAAACTGAAGAATTCAAAGCTCAAGTTATTATTATGAACCATCCTGGCCAAATCAGTGCTGGTTATGCCCCAGTGGTCGACTGTCATACTTCTCATATTGCTTGTAAATTCCGTGATTTGTTGGAGAAGATTGATCGTCGTAGTGGGAAAAAGCCAGAGGACAACCCCGCCAATGTTAAAGCTGGAGACGCTGCTATAGTTGAAATGGTCCCACAAAAACCAATGTGTGTGGAATCATTTTCTGAATATCCTCCTTTA.GTCGTTTTGCCGTTCGT Rhynchosciara_americana AAAAACGTTTCCGTCAAGGAATTGCGTCGTGGTTACGTTGCTGGTGACTCGAAAGCCAATCCGCCAAAAGGAGCCGAAAACTTCACCGCACAAGTCATCGTTCTTAATCACCCCGGACAAATCTCTAACGGTTACACTCCCGTCTTGGATTGTCACACTGCTCACATTGCATGCAAATTCGCCGAAATTAAGTA.AAGGTTGACCGTCGTTCAGGTAAATCAACTGAAGACAATCCAAAAGCCATCAAGTCTGGTGATGCTGCCATTGTCATCCTTCAACCATCCAAACCGTTGTGTGTCGAGTCCTTCCAAGAATTCCCACCATTGGGACGTTTTGCCGTTCGA Ridgeia_piscesae AAGAACGTGTCCGTCAAGGATGTCCGTCGAGGCTTCGTGTGTGGTGACTCGAAGAACGACCCACCAATGGAGACAGATGAATTCCTTGCTCAGGTGATCATCCTGAACCACCCAGGTACGATCCAGGCTGGATACGCACCCGTCCTCGACTGCCACACGGCCCACATTGCGTGCAAGTTCAAGGAGCTGAAGGAGAAGATCGATCGCCGTAGCGGAAAGGTGCTCGAGGCCAACCCCCAGAGCGTGAAGTCTGGCGACGCCGCGATGGTTGAA........................................................................ Sternaspis_scutata AAGAACGTCTCTGTCAAAGACATCCGTCGAGGATACGTTGCCGGCGATTCAAAGAATGACGCTCCCAAGGAAGCGCAGGAATTCAAGGCTCAGGTTATTATCCTGAATCACCCTGGTCAGATTAACGCCGGGTATGCGCCGGTGCTGGACTGTCACACAGCTCATATCGCCTGCAAGTTCAGGGAGCTGGTCGAGAAGATTGATCGTCGTAGTGGAAAGTCTCTGGAGACTAGCCCCAGCAGCATTAAATCTGGTGAGGCCGCCATCGTTAACATGGTGCCCCAAAAGCCAATGTGTGTCGAGACCTTCAATGAATACGCCCCTCTTGGACGTTTTGCCGTTCGT Urechis_caupo AAGAACGTTTCTGTCAAGGAAATCCGCAGAGGGTATGTTGCTGGCGATTCCAAGAATGATCCACCCAAGGCCACTGAAAACTTCAAGGCCCAGGTGATCATCCTGAACCACCC{CT}C{CG}CAGCATCTCCAGTGGATACCCCCCGGTGTTGGAT{CT}{CG}CCACACCGC{CT}CACATAGCCTGCAAGTTCCAGGAGATCCTTACCAAGAGTGGTCGTCGTACTGGCAAGACCCTTGAAGAGAACCCCCAGGCCGTCAAGTCTGGCGATGCCTGCATGGTAAACATGGTGCCCCAGAAGCCCATGTGTGTTGAGGCTTTCAACGACTACGCTCCCCTGGGACGTTTTGCCGTGCGT Xenopus_laevis AAGAACGTTTCCGTGAAGGACGTCCGTCGTGGCAACGTTGCTGGTGACAGCAAGATTGACCCACCAATGGAAGCTGGTTCTTTTACCGCACAGGTTATCATCCTGAATCACCCAGGCCAGATTGGTGCTGGATATGCCCCTGTGTTGGATTGCCACACTGCTCACATTGCTTGCAAGTTTGCTGAGCTAAAGGAGAAGATTGATCGCCGTTCTGGTAAGAAACTGGAAGACAATCCCAAGTTCCTGAAGTCTGGAGATGCTGCCATTGTTGACATGATCCCAGGAAAGCCAATGTGCGTGGAGAGCTTCTCAGACTACCCTCCTCTTGGTCGTTTTGCTGTCCGT ; END; BEGIN SETS; CHARSET second (CHARACTERS = ) = 245 248 251 254 257 2 5 8 11 14 17 20 23 26 29 32 35 38 41 44 47 50 53 56 59 62 65 68 71 74 77 80 83 86 89 92 95 98 101 104 107 110 113 116 119 122 125 128 131 134 137 140 143 146 149 152 155 158 161 164 167 170 173 176 179 182 185 188 191 194 197 200 203 206 209 212 215 218 221 224 227 230 233 236 239 242 260 263 266 269 272 275 278 281 284 287 290 293 296 299 302 305 308 311 314 317 320 323 326 329 332 335 338 341 344; CHARSET first (CHARACTERS = ) = 16 19 22 25 28 1 4 7 10 13 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82 85 88 91 94 97 100 103 106 109 112 115 118 121 124 127 130 133 136 139 142 145 148 151 154 157 160 163 166 169 172 175 178 181 184 187 190 193 196 199 202 205 208 211 214 217 220 223 226 229 232 235 238 241 244 247 250 253 256 259 262 265 268 271 274 277 280 283 286 289 292 295 298 301 304 307 310 313 316 319 322 325 328 331 334 337 340; CHARSET third (CHARACTERS = ) = 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 66 69 72 75 78 81 84 87 90 93 96 99 102 105 108 111 114 117 120 123 126 129 132 135 138 141 144 147 150 153 156 159 162 165 168 171 174 177 180 183 186 189 192 195 198 201 204 207 210 213 216 219 222 225 228 231 234 237 240 243 246 249 252 255 258 261 264 267 270 273 276 279 282 285 288 291 294 297 300 303 306 309 312 315 318 321 324 327 330 333 336 339 342 345; END;